When the concrete cutter stopped rotating and put out to a repair shop nearby, it was told that it is told that it will take as long as you buy a new item when you replace the engine parts. When we took over and broke and decomposed it was originally disassembled it understood that the bearing was shattered and locked but as it was a bearing with a flange that I had never seen before, I searched on the net, there was a monotaro. I got repaired quickly at about 2000 yen. It was saved.